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论女大学生校外安全意识的培养

武夷学院学报 2016年第7期35卷 106-109页

作者：宁瑞雪郗洪芳福建师范大学教育学院福建福州350007 山东宁阳县实验中学数学组山东泰安271400

随着社会环境的日益复杂,高校女大学生和社会的接触互动也越来越多。当今女大学生安全意识薄弱,而高校针对女生的安全防范教育却远远落后于形势的发展。文章在分析女大学生安全意识薄弱原因的基础上,提出了加强女大学生校外安全意识的... 详细信息

随着社会环境的日益复杂,高校女大学生和社会的接触互动也越来越多。当今女大学生安全意识薄弱,而高校针对女生的安全防范教育却远远落后于形势的发展。文章在分析女大学生安全意识薄弱原因的基础上,提出了加强女大学生校外安全意识的可行途径,要改变安全教育的传统观念和方式、高校协调家庭和社会形成合力、学校高度重视转变管理理念、利用学生组织加强女大学生安全意识。

关键词：女大学生校外安全意识安全教育培养

Arc erosion behavior of a nanocomposite W-Cu electrical contact material

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Rare Metals 2006年第1期25卷 37-42页

作者： CHEN Wenge KANG Zhanying SHEN hongfang DING Bingjun School of Materials Science and Engineering Xi＇an University of Technology Xi＇an 710048 China Department of Materials Physics Xi＇an Jiaotong University Xi＇an 710049 China

The erosion behavior of a nanocomposite W-Cu material under arc breakdown was investigated. The arc erosion rates of the material were determined, and the eroded surfaces and arc erosion mechanisms were studied by scanning eleclion microscopy. It is concluded that the nanocomposite W-Cu electrical contact material shows a characteristic of spreading arcs. The arc breakdown of a commercially used W-Cu alloy was limited in a few areas, and its average arc erosion rate is twice as large as that of the former. Furthermore, it is also proved that the arc extinction ability and arc stability of the nanocomposite W-Cu material are excellent, and melting is the major failure modality in the make-and-break operation of arcs.

关键词： arc erosion W-Cu alloy contact materials nanocomposite

Investigation on property and mechanism of redox wave of methylhesperidine at Hg electrode

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Science China Chemistry 2005年第z1期48卷 20-24页

作者： ZHENG Jianbin MENG Zuchao ZHANG hongfang Institute of Analytical Science/Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry Northwest University Xi'an 710069 China Institute of Analytical Science/Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry Northwest University Xi'an 710069 China Institute of Analytical Science/Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry Northwest University Xi'an 710069 China

The voltammetric behaviors of methylhesperidine (MH) were studied by means of linear sweep voltammetry, cyclic voltammetry and normal pulse voltammetry. In the Brit ton-Robinson buffer solutions with pH values from 2.05 to 6.37, MH could yield three reduction waves PC1, PC2 and PC3. PC1 wave is an adsorptive pre-wave. PC2 wave is an irreversible reduc tion of pre-protonated MH involving one electron and one proton. PC3 wave is an irreversible wave of reduction species radical of MH involving one electron.

关键词： voltammetric behavior, polarography, mechanism, reduction, methylhesperidine.

Conflict Resolution Based on Collaborative Design of Grid Services

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Wuhan University Journal of Natural Sciences 2008年第4期13卷 490-494页

作者： LUO Zuomin ZHANG Jing ZHOU hongfang CHEN xinhua School of Computer Science and Engineering Xi＇an University of Technology Xi＇an 710048 Shaanxi China

To the issues of low efficiency of conflict resolution method in collaborative design, we proposed a method, which is conflict resolution about collaborative design based on grid *** uses the grid services from the current design points, uses the method of retrospective thinking to find the conflict point by detecting, and then uses the corresponding method to resolve the conflict point according to the conflict characteristic, after that carried on the conflict detection again. If there is still the conflict, resolve the conflict point again, until the conflict no longer exists. This method combines various traditional resolution methods, makes full use of the grid idle high-performance large-scale sharing resources. With this method the collaborative design conflict resolution cost reduced and the conflict resolution efficiency was raised. And then the problem which is not handled completely was then solved, so that the conflict resolution Quality was guaranteed.

关键词： grid services collaborative design conflict resolution conflict characteristic conflict detection

Experimental Study on Condensation Heat Transfer Characteristics inside an Inclined Wave-Finned Flat Tube of Direct Air-Cooling System

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Journal of Thermal Science 2021年第2期30卷 432-440页

作者： WANG Haitao TAO Tao MEI Xuesong WANG Haijun GU hongfang State Key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong UniversityXi'an 710049China Shaanxi Key Laboratory of Intelligent Robots School of Mechanical EngineeringXi'an Jiaotong UniversityXi'an 710049China State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong UniversityXi'an 710049China

In this paper,the condensation heat transfer characteristics of parallel flow and counter flow inside an inclined wave-finned flat tube is investigated *** condensation heat transfer coefficients are analyzed based on the experimental *** of experiments show that condensation heat transfer coefficient decreases as the temperature difference Δt=ts-tw increases and mass flow rate *** parallel flow has a similar development with the counter flow,and the condensation heat transfer coefficient of counter flow is less than that of parallel flow under the same air cooling *** addition,condensation heat transfer coefficient correlations are also obtained under experimental *** calculations agree well with the measured data and the agreement is seen to be within ±4% for the parallel flow and ±5% for the counter flow.

关键词： condensation heat transfer wave-finned fiat tube modified model parallel flow counter flow

Recovery of waste heat in cement plants for the capture of CO2

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Frontiers of Chemical Science and Engineering 2012年第1期6卷 104-111页

作者： Ruifeng DONG Zaoxiao ZHANG hongfang LU Yunsong YU State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong UniversityXi'an 710049China

Large amounts of energy are consumed during the manufacturing of cement especially during the calcination process which also emits large amounts of CO2. A large part of the energy used in the making of cement is released as waste heat. A process to capture CO2 by integrating the recovery and utilization of waste heat has been designed. Aspen Plus software was used to calculate the amount of waste heat and the efficiency of energy utilization. The data used in this study was based on a dry process cement plant with a 5-stage preheater and a precalciner with a cement output of 1 Mt/y. According to the calculations： 1） the generating capacity of the waste heat recovery system is 4.9MW. 2） The overall CO2 removal rate was as high as 78.5%. 3） The efficiency of energy utilization increased after the cement producing process was retrofitted with this integrated design.

关键词： cement industry waste heat recovery utiliza-tion CO2 removal

Enhanced pyrocatalysis of the pyroelectric BiFeO_(3)/g-C_(3)N_(4) heterostructure for dye decomposition driven by cold–hot temperature alternation

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Journal of Advanced Ceramics 2021年第2期10卷 338-346页

作者： Mingzi Chen Yanmin Jia Huamei Li Zheng Wu Tianyin Huang hongfang Zhang College of Physics and Electronic Information Engineering Zhejiang Normal UniversityJinhua321004China School of Science Xi’an University of Posts and TelecommunicationsXi’an710121China College of Environmental and Chemical Engineering Xi’an Polytechnic UniversityXi’an710048China Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application School of Physical Science and Technology and School of Environmental Science and EngineeringSuzhou University of Science and TechnologySuzhou215009China

The BiFeO_(3)/g-C_(3)N_(4) heterostructure,which is fabricated via a simple mixing–calcining method,benefits the significant enhancement of the pyrocatalytic *** the growth of g-C_(3)N_(4) content in the heterostructure pyrocatalysts from 0 to 25%,the decomposition ratio of Rhodamine B(RhB)dye after 18 cold-hot temperature fluctuation(25-65℃)cycles increases at first and then decreases,reaching a maximum value of~94.2%at 10%while that of the pure BiFeO_(3) is~67.7%.The enhanced dye decomposition may be due to the generation of the internal electric field which strengthens the separation of the positive and negative carriers and further accelerates their *** intermediate products in the pyrocatalytic reaction also have been detected and confirmed,which proves the key role of the pyroelectric effect in realizing the dye decomposition using BiFeO_(3)/g-C_(3)N_(4) heterostructure *** pyroelectric BiFeO_(3)/g-C_(3)N_(4) heterostructure shows the potential application in pyrocatalytically degrading dye wastewater.

关键词： pyroelectric material BiFeO_(3) g-C_(3)N_(4) heterostructure pyrocatalysis

A Hydrogen Peroxide Sensor Based on Silver Nanoparticles Biosynthesized by Bacillus subtilis

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Chinese Journal of Chemistry 2013年第12期31卷 1519-1525页

作者： Ruixiao Liu Yahui Wei Jianbin Zheng hongfang Zhang Qinglin Sheng Institute of Analytical Science/Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry Northwest University Xi'an Shaanxi 710069 China Key Laboratory of Resources Biology and Biotechnology in Western China Ministry of Educational Northwest University Xi' an Shaanxi 710069 China

In this study, silver nanoparticles （AgNPs） were biosynthesized by Bacillus subtilis and used to construct a nonenzymatic hydrogen peroxide （H202） sensor, Scanning electron microscopy, transmission electron microscopy and energy dispersive spectroscopy confirmed that the AgNPs were prepared successfully with spherical morphol- ogy. The electrochemical properties of the resulted sensor were investigated by cyclic voltammetry, chronoam- perometry and electrochemical impedance spectroscopy. It was found that the sensor exhibited good electrocatalytic activity towards H202 reduction with a wider linear range from 0.05 to 120 mmol.L-1, a detection limit of 8 gmol.L-1 and a fast response time less than 2 s. The sensor exhibited good selectivity for H202 determination in the presence of glucose, acetaminophen, ascorbic acid and uric acid.

关键词： sensor biosynthesis Bacillus subtilis silver nanoparticles hydrogen peroxide

Progress in oscillographic chronopotentiometry

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Science China Chemistry 2005年第z1期48卷 1-8页

作者： GAO Hong ZHANG hongfang ZHOU Yuanzhen ZHENG xiaohui ZHENG Jianbin Institute of Analytical Science/Shaanxi Provincial Key Lab of Electroanalytical Chemistry Northwest University Xi'an 710069 China Institute of Analytical Science/Shaanxi Provincial Key Lab of Electroanalytical Chemistry Northwest University Xi'an 710069 China Institute of Analytical Science/Shaanxi Provincial Key Lab of Electroanalytical Chemistry Northwest University Xi'an 710069 China Institute of Analytical Science/Shaanxi Provincial Key Lab of Electroanalytical Chemistry Northwest University Xi'an 710069 China Institute of Analytical Science/Shaanxi Provincial Key Lab of Electroanalytical Chemistry Northwest University Xi'an 710069 China

The investigation on oscillographic chronopotentiometry after 2000 is reviewed. The development course of oscillographic chronopotentiometry is looked back. Some new instrumentations and new methods about oscillographic chronopotentiometry as well as applications of chemometrics in oscilloanalysis are introduced. The prospects of oscillographic chronopotentiometry development are also discussed in this paper.

关键词： virtual instrument, chemometrics, oscillographic chronopotentiometry, oscillographic analysis.